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Correctly maintain state when manipulating linked lists. This fixes a

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bug that prevented the line-number buffer from working correctly.  AFAIK
the bug is still present in other derivatives of more(1).
This commit is contained in:
Tim Vanderhoek 1999-12-27 20:53:35 +00:00
parent a57e826a49
commit 79bf951d43
1 changed files with 8 additions and 3 deletions
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11
usr.bin/more/linenum.c
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@ -36,6 +36,11 @@
static char sccsid[] = "@(#)linenum.c 8.1 (Berkeley) 6/6/93";
#endif /* not lint */
#ifndef lint
static const char rcsid[] =
"$FreeBSD$";
#endif /* not lint */
/*
* Code to handle displaying line numbers.
*
@ -121,7 +126,7 @@ clr_linenum()
* Initialize the anchor.
*/
anchor.next = anchor.prev = &anchor;
anchor.gap = 0;
anchor.gap = (off_t)0;
anchor.pos = (off_t)0;
anchor.line = 1;
}
@ -227,8 +232,8 @@ add_lnum(line, pos)
mingap = p->gap;
}
}
spare->next->prev = spare->prev;
spare->prev->next = spare->next;
calcgap(spare->next->prev = spare->prev);
calcgap(spare->prev->next = spare->next);
}
}